If it is folliculitis, it is infected hair follicles. However, from the size of the largest of the lesions, it's more likely to be impetigo (also caused by a bacteria; usually this starts when there is a small opening in the skin-from a scratch or scrape-allowing the bacteria to move in). Once the infection has set in, whenever a person touches it or scratches, then touches or scratches somewhere else, the infection starts there as well. Since it has recurred, he might not have been on the correct antibiotic. The sores should be cultured to see what bacteria grows and what antibiotic they are sensitive to.
http://mayoclinic.com/health/impetigo/DS00464/DSECTION=5
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